The photo portrays Navalni along with her family, which was posted on her Instagram account on Tuesday.
In his first direct message after hospitalization, the anti-corruption activist said that he was now breathing on his own without medical help.
“Hi, this is Navalni,” he wrote in the caption. “I miss you. I can still hardly do anything, but yesterday I was able to breathe on my own all day. Just myself. I didn’t use any external help, the simplest valve in my throat. Not even.”
The German government said Navalny was poisoned with a chemical nerve agent from the Soviet government Novichok Group, and questions are being raised over the Russian state’s involvement in the incident.
Despite this, the Kremlin critic returned to his home country, his press secretary Kira Yarmish told CNN in a text message on Monday.
“No other option was ever considered,” Yarmish said.
Navalny first became ill on 20 August on a flight from the Siberian city of Tomsk to Moscow. He was hospitalized in the city of Omsk after an emergency landing.
He was then airlifted two days later to the Charité Hospital in Berlin and remained in Germany for weeks while away from mechanical ventilation.
On Monday, the hospital said Navalny was able to leave her bed for a short time.
The Kremlin critic has been attacked with widespread international condemnation.
The German government discovered that it had been poisoned with a Novichok nerve agent after testing, a conclusion that is supported by two other laboratories in France and Sweden.
Novichok was also used in an attack on former Russian spy Sergei Skripal in the English city of Salisbury in March 2018 and poisoned many Russian dissidents in the past.
Berlin called Moscow to explain how Navalny was poisoned, but the Kremlin has survived because of criticism.
Russian President Vladimir Putin on Monday called the Kremlin involvement allegations “baseless” and “inappropriate” during a call with French President Emmanuel Macron.
“[The two sides] In Monday’s call states discussed in detail the situation surrounding the Kremlin’s account ‘Navalny Case’.
“Vladimir Putin emphasized the unfair nature of the baseless allegations against the Russian side in this context.”
The French readout of the call said that Macron insisted Putin “shed all light on the circumstances and responsibilities of the assassination in this effort, without delay.”