Yup, if hubby is meeting you make sure he drives. I cannot forget yelling at my husband, "LEFT, honey, left!!" when he was driving in Negril and pulled out of a gas station and continued up the right hand side of the road, haha!
Mrslwsn, about the TRV for your SIL. Write a very specific invitation letter, not just the generic one. Emphasis the date she is expected back at school, and if she pays her school fees in advance, or applied for her student loans, add proof of this to show that she is definitely expecting to return and continue her education, not planning to run off. Yes, include information that you are inviting her to assist with your husband's settling in and for her to enjoy spending time with your children and family. The problem with someone who has been denied multiple attempts previously is they will usually keep denying them, so you have to present them with reasons to re-evaluate the decisions made by the previous embassies.