I personally think/hope that The Mother’s name will be 'Rose'
Hear me out;
1. It stays along the line of the female character’s names being ‘nature based’ (Lily, Robin)
2. She sung ‘La Vie en Rose' at the end of 9x16
3. The Mother is wearing a sweater with a rose on it in 9x16 when Ted is in the wrong lecture classroom
4. Roses symbolise love
5. Let’s face it; Rose Mosby sounds awesome.
omg yes i love it