My mom had wanted to come visit this weekend but plans fell through.

Jetblue is running a sale now and I'm thinking about getting her a ticket to fly up here either before or after our planned trip home around Labor Day weekend.

Few things to consider:
1) My mom watches my nephew full time so I would be leaving SIL w/o childcare for the # of days my mom is here. However, her mom would watch my nephew but she's not as great health wise.
2) We were planning on stopping off at Boston on the way home to visit our BFFs. But they will be back here in mid August so it's possible to change that plan?
3) We are budgeting so obviously price is a concern but my mom would watch LO when she's here so we'll save on childcare! So it kinda negates the cost of airfare.

Here are the options:

1 - My mom flies in Friday, Aug 23. $150. Rides to NYC with us on Friday, Aug 30. SIL is left w/o childcare only for 7 days.

2- Leave NYC with us on Sunday, 9/1 to Boston. This will be more inconvenient for us bc we'll be staying with friends. She flies home on Mon, 9/9. $74. SIL is left w/o childcare for 8 days.

3- Fly in Wednesday, 8/21. $92. Drive to NYC with us on 8/30. SIL without childcare for 9 days.

Which way would you do it???