Can an inactive attorney be sued for malpractice?

Attorney in 1987 divorce case ignored my messages. That hsb. Was selling property that I had an interest in. (Was for sale 6 yrs. Ago for $1,350,000.00.) Atty. Did not return phone calls. Gave my draft of "our" settlement agreement two days before the court date, which was a whited out a copy of another client's settlement agreement. She gave all assets to hsb. After 16 years of marriage, no visitation schedule draft with our son. She threatened me when I said I would not sign it told me "the judge is not going to like that and he will come down hard on you." I was afraid and signed. I wrote the judge and hand-delivered the letter. Judge ordered hearing and for my Atty. To appear. (Atty. Withdrew/I had dismissed her concurrently before hearing.) Atty. Did not show up and sent notes to judge that "he had not cleared her schedule." Judge ruled in that case was "taking too long" and let the settlement stand. Attorney. Represented the same custody evaluators who did our level. In which hsb. Got full custody. Son 14 attempted suicide and was hospitalized for 7 MOS.; Dr. would not release son back to hsb. As he used drugs and alcohol with son. I’m 71-1/2 yrs. Old and live on SS check of $1,039 and home equity line. Selling house to pay back line. I never dreamed I would be so poor. CPA recently told me that even when I sell house and other assets that "you don't and won't have enough to live on." Can a now inactive attorney be sued for malpractice in Colo. After 26 years? I have all of the paperwork.