Women praying in the musalla to the right of the men
Question

                We are Muslims living in America. Allah, may He be glorified and exalted, has enabled the community to buy a mosque that was originally a church. First of all, we would like to ask you about things inside the building that are symbols of their religion -- can they be covered up if it is not possible to take them out? 

The second question is: it is not possible to make a prayer space for the women in the back. The only place where it is possible to make a prayer space for the women is either to the right of the men or to their left, with a wall to separate them from the men. We hope that you can advise us as quickly as possible so that we can start working to complete the renovation of the mosque.
Praise be to Allah.
      Firstly: 

    It is obligatory to remove the religious images and symbols 
    mentioned from the mosque. If it is not possible to take them out, it is 
    sufficient to cover them up or paint the wall in such a way as to make their 
    features disappear. If they are statues and it is not possible to remove 
    them, the head only may be removed, because of the report narrated by Muslim 
    (969) from Abu’l-Hayyaaj al-Asadi who said: ‘Ali ibn Abi Taalib said to me: 
    Shall I not send you on the same mission as the Messenger of Allaah 
    (blessings and peace of Allah be upon him) sent me? “Do not leave any image 
    without erasing it or any high grave without leveling it.” according to 
    another report: “or any image without erasing it.” 

    Al-Tirmidhi (2806) and Abu Dawood (4158) “Jibreel came to me 
    and said to me: ‘I came to you last night and nothing kept me from entering 
    but the fact that there were statues at the door and there was a curtain in 
    the house on which there were images, and there was a dog in the house. So 
    tell someone to cut off the heads of the statues that are by the door of the 
    house, so that they will become like trees, and tell someone to take down 
    the curtain and make it into two cushions which can be placed on the floor 
    and on which people may step, and tell someone to take the dog out.’” And 
    the Messenger of Allaah (blessings and peace of Allah be upon him) did that. 
    The dog belonged to Hasan or Husayn, and it was under a table of theirs, and 
    he ordered that it be taken out.. 

    The hadeeth was classed as saheeh by al-Albaani in Saheeh 
    al-Jaami‘, no. 68. 

    Secondly: 

    There is nothing wrong with making the prayer space for the 
    women inside the mosque on the right or left of the men, as has been 
    explained in the answer to question number
    79122. 

    It is possible for them to follow the imam by hearing his 
    voice directly or through a microphone; it does not matter if they cannot 
    see the imam or the people praying behind him. 

    Shaykh Ibn ‘Uthaymeen (may Allah have mercy on him) was 
    asked: What is the ruling on women praying in mosques in which they cannot 
    see the imam or the people praying behind him, and they can only hear his 
    voice? 

    He replied: It is permissible for women and men also to pray 
    with the congregation in the mosque, even if they cannot see the imam or the 
    people praying behind him, if it is possible to follow the prayer. If his 
    voice reaches the women where they are in the mosque and they are able to 
    follow the imam in prayer, then it is permissible for them to pray with the 
    imam, because the place is one and it is possible to follow the imam whether 
    by hearing his voice through the microphone or hearing the voice of the one 
    who conveys it from the imam. It does not matter if they cannot see the imam 
    or the people praying behind him; rather some scholars stipulated that it 
    should be possible to see the imam or the people praying behind him in cases 
    where someone is playing outside the mosque. End quote from Majmoo‘ 
    Fataawa al-Shaykh Ibn ‘Uthaymeen (15/213) 

    See also the answer to question number
    93369. 

    We ask Allah to help and guide us and you. 

    And Allah knows best.