This was confirmed by Virginia Stillman, whom Quinn called each night after returning home.
1	This	this	PRON	DEM-SG	Number=Sing|PronType=Dem	3	nsubj:pass	_	_
2	was	be	AUX	PAST	Mood=Ind|Number=Sing|Person=1|Tense=Past|VerbForm=Fin	3	aux:pass	_	_
3	confirmed	confirm	VERB	PASS	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	by	by	ADP	_	_	5	case	_	_
5	Virginia	Virginia	PROPN	SG-NOM	Number=Sing	3	obl	_	_
6	Stillman	Stillman	PROPN	SG-NOM	Number=Sing	5	flat	_	SpaceAfter=No
7	,	,	PUNCT	Comma	_	10	punct	_	_
8	whom	who	PRON	WH-ACC	PronType=Int	10	obj	_	_
9	Quinn	Quinn	PROPN	SG-NOM	Number=Sing	10	nsubj	_	_
10	called	call	VERB	PAST	Mood=Ind|Tense=Past|VerbForm=Fin	6	acl:relcl	_	_
11	each	each	DET	TOT-SG	_	12	det	_	_
12	night	night	NOUN	SG-NOM	Number=Sing	10	obl	_	_
13	after	after	ADP	_	_	14	mark	_	_
14	returning	return	VERB	ING	Tense=Pres|VerbForm=Part	10	advcl	_	_
15	home	home	ADV	_	_	14	advmod	_	SpaceAfter=No
16	.	.	PUNCT	Period	_	3	punct	_	_
