Dear snow I am so sorry that you have had these horrible blows to your self esteam.
You are special and wonderful whether your DH is in tow or not.
Your oldest DD is an adult and will make her own decisions but she may be encouraged if she sees you attending a church where your natural gifts and talents cane be used and appreciated.
If I were you I would find such a church and take your younger children along. I would invite DD to come iwth you and encourage her to find her faith for herself. Lots of Christians (like me) are feminists and haveno desire to be down trodden at all.
Personally I like the C of E, at it's best I like the style. but some are a bit dull and yes some will want to put you in your place to make the tea! Although the C of E does not have women bishops, it will soon, I feel sure.
Like wise traditional Baptist churches may have views on women but Baptist Unionb of Great Britian has a woman at its top!
I woudl read the website of any church yuo plan to visit and check first what they think about women. I got a church affiliated to FIEC (Fellowship of Independant Evangelical Churches). We do not have women elders or minitsres or allow women to preach the main Sunday service. I got involved with the church before I realised this! I love the peopel and they love me. I am involved in things and lead things (or head them up) as do many women in our church. I stay because I love the people but one day I will almost certinaly find another church.
Part of the story is to stay in churches that are rather backward looking and encourage them to see the potential in women and girls in leadership, but sometimes it is totally right that we do move on. The fact this is putting your 18 year old off church would sound a massive warning bell for me. I would (in your shoes) encourage her to help you find a suitabel church you can all be part of.
As far as yur Dh goes I am afriad this is between you both. I would want want to find out about the texts and I would (personal opinin) want to maybe get some counselling to get your marrriage back on track. I would encourage him to see you as an equal partner and because you married him believeing he would be strong Christian partner (I pressume) and he has not done that I would really encouage him to be a part of the new church you and your kids join. However if he does not I would accept that and would try and build your relationshop more around those things you do have in common, and would ensure that any question about why yuor husband does not come to chruch with you etc would be met with a warm smile and a solum 'You wil have to ask him about that, but I/we (you and your kids) are here today and I really liked the sermon.... flowers... coffee cake you made... solo you sung ... etc. people will soon learn you are your own wonderful person and if you act like this at home your husband might just fel intrigued to find out about this new church!
All the very best, you are amazing, three lovely children and a life of faithful service, time for you to enjoy being you a but more (IMHO). Bless you.