"Michael, I, and the girls thank you for the generous gift." ... that works grammatically. You could switch around the order if you wanted to:
"The girls, Michael, and I all thank you..." (with or without "all")
"I, Michael, and the girls thank you..." (with or without "all")
any of those work grammatically.
A team of girls is ("of girls" is a modifier, a team is the subject and that is singular)
Townley Grammar School for Girls was created in 1937.
I'm sure he'd like a girl who uses correct grammar.
Shelford Girls' Grammar was created in 1898.
The motto of Watford Grammar School for Girls is 'I can do it and I will do it'.
Lancaster Girls' Grammar School was created in 1907.
Wilmington Grammar School for Girls was created in 1957.
Auckland Girls' Grammar School was created in 1888.
Canberra Girls' Grammar School was created in 1926.
Wirral Grammar School for Girls was created in 1931.
Watford Grammar School for Girls was created in 1704.
Mentone Girls' Grammar School was created in 1899.