FMIL has been with her FI for 1 year now. FI told her before they got engaged a few months ago, that he didn't want her to bring her then BF b/c he just didn't feel right about it (his father passed about 3.5 years ago now). FMIL agreed and didn't say anything else about it. The other night at dinner, when we were telling her we booked our reception venue, she turns to her FI and says, see now you have to get a suit or a tux or whatever. FI and I didn't say anything as it was a holiday and we didn't want to ruin dinner, however, she's never even discussed with us the possibility of bringing him after they got engaged or anything. We don't want to tell her no, b/c she's finally excited about the wedding and wants to get involved, but FI still doesn't feel comfortable with her bringing him. Any advice? TIA!