WOW you only had 2??? You are strong willed! I got two, lost one, and got two more for my girl. That was last June,
now....
We have 6 leghorns, 4 orpintons, 1 silky, 3 RIR, 2 barred rocks, 2 turkeys, 1 leghorn roo, 1 polish roo, 4 EE, and 10 ducks!
My DH would love you, cuz you seem to have a rare thing called will power, lol Something I am really lacking!
Yes, a companion would be nice, but I would do two. This way when your older hens time comes you will already have a companion for your other girl and won't have to deal with the new introductions.