Farieissia Martin, 22, had denied killing 21-year-old Kyle Farrell, who was knifed in the chest at the house in Charlecote Street, Dingle.
But a jury at Liverpool Crown Court found Martin guilty. She is due to be sentenced on 9 June.
Mr Farrell died in hospital after suffering a single stab wound early on 21 November 2014.
His family said he was a "devoted father and loving son" who will be missed by all his family and friends.

The 35-year-old extended his stay with the League Two club in June after his short-term contract expired at the end of last season.
He helped Notts win seven of their last 13 games to avoid relegation.
"I believe we're on the cusp of doing something great. Hopefully I can be a big part of that," Ameobi said.
Talking to BBC East Midlands Today, the former Newcastle striker continued: "I feel that we have the quality in this squad to compete with any team in this league.
"Promotion spots, fighting for play-off spots. For me, as a team I think we're good enough to be in those positions."
At Meadow Lane, Ameobi is working under former Newcastle United team-mate Kevin Nolan, who initially brought the former Nigeria international in after taking over as Notts boss in January.
"As soon as I got the phone call, it wasn't really a big decision," Ameobi said.
"I know how he works, what sort of character he is, for me that's a big thing, understanding who you're working for. What he's trying to build is a big part of why I decided to come here. "
Ameobi, who represented Nigeria at the 2014 World Cup having played as a junior for England, said Nolan's demanding pre-season fitness routines have been punishing.
"I think the older you get the harder everything is," he added.
"I think it's my 20th pre-season now. I'm still loving it, even if it's a bit painful at times we know it's all for a reason and hopefully we'll see the results once the games start."

The ministers were speaking after they met in Cardiff to discuss the implications of the EU referendum vote.
Voters in Scotland and Northern Ireland opted to remain in the EU in the referendum, while Wales voted to leave.
Northern Ireland Finance Minister Máirtín Ó Muilleoir described the meeting as "positive".
"We want to speak with one voice to the chancellor - when we speak together, in a united fashion, we speak for 10m people," Mr Ó Muilleoir said.
"So despite the fact that we voted in the north of Ireland to remain, the Scottish voted to remain, the Welsh voted to leave, despite that, I think we have made common cause today around some issues we want to bring to the chancellor's table.
"We do seek resolution, particularly around this austerity agenda hampering our economic growth."
His Welsh counterpart Mark Drakeford said all three nations relied on EU funding.
"All three of us have to be determined to hold the United Kingdom to account in delivering the promises that were made to people that money would come in Wales' case to Wales - and that Wales would be better off, not worse off, as a result of leaving the European Union," Mr Drakeford said.
"That's a common cause for us all," he said.
Scottish Finance Secretary Derek Mackay said: "We want the UK government to respect our position.
"We will be issuing a letter to the UK government and we call upon them to give us some financial stability and ensure that we are represented in discussions going forward.
"So maybe with a new prime minister we'll get a new attitude from the UK government."
A woman accused of stabbing a man to death at her house in Liverpool has been convicted of murder.
[NEXT_CONCEPT]
Striker Shola Ameobi says he signed a new deal with Notts County because he has unfinished business with a club capable of challenging for promotion.
[NEXT_CONCEPT]
Finance ministers from Northern Ireland, Scotland and Wales have said they should be included in the UK's negotiations to leave the EU.